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Alaska's abundant, remote, and predominantly pristine freshwater fish habitats are largely unexplored and undocumented. To begin filling these vast information gaps, the Alaska Freshwater Fish Inventory Database (AFFID) houses freshwater fish (anadromous and resident)-occurrence data sets compiled from a variety of sources. Most records in the AFFID come from Alaska Department of Fish and Game (ADFG) fish and aquatic habitat inventories. However, the AFFID also includes selected recent fish-occurrence data sets from ADFG Fish Resource Permit fish-collection reports submitted to ADFG by other organizations (agencies, consulting firms, non-governmental organizations, and individuals) who collect fish for scientific...
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Each community in the study area is served by an isolated grid, with its own generation and distribution infrastructure. All energy infrastructure in each community is within the community’s footprint. Barrow and Prudhoe Bay, the two largest population centers, rely completely on natural gas for generation of electricity. Nuiqsut relies both on natural gas and diesel. Other than Barrow and Prudhoe Bay, all other communities have small demand loads, and thus only generate less than a megawatt.
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Fish occurrence data have been collected within the North Slope study area, however most of these data are presently available only in non-digitized format (e.g., hardcopies, inventory reports, unpublished data, etc.). Due to the lack of spatial data available, Alaska Natural Heritage Program began collaboration with BLM fisheries biologists to assist with their efforts to enter these fish distribution datasets into the geodatabase RipFish that was developed and is maintained by BLM. Our contribution to this database serves as a final product for the Aquatic Fine-Filter CEs for the Rapid Ecoregional Assessment and will allow managers to readily have access to fish distribution data and conduct future spatial analyses....
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Willow ptarmigan (Lagopus lagopus) occupy the boreal and arctic northern hemisphere, and are one of the few bird species that remain in the Arctic year-round. In Alaska and northern Canada, willow ptarmigan are common in areas with patches of dense vegetation, especially where willow (Salix) or birch (Betula) shrubs are abundant. They are also found in sedge-willow (Carex-Salix) marshes, in meadows, along road and forest edges, and on open tundra. Unlike Rock Ptarmigan (L. muta), the species avoids dry, rocky areas. After chicks hatch, birds move to wetter areas, such as marshes and along streams. Willow ptarmigan were selected as a Terrestrial Fine-Filter CE for this assessment because they are an important prey...
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Willow ptarmigan (Lagopus lagopus) occupy the boreal and arctic northern hemisphere, and are one of the few bird species that remain in the Arctic year-round. In Alaska and northern Canada, willow ptarmigan are common in areas with patches of dense vegetation, especially where willow (Salix) or birch (Betula) shrubs are abundant. They are also found in sedge-willow (Carex-Salix) marshes, in meadows, along road and forest edges, and on open tundra. Unlike Rock Ptarmigan (L. muta), the species avoids dry, rocky areas. After chicks hatch, birds move to wetter areas, such as marshes and along streams. Willow ptarmigan were selected as a Terrestrial Fine-Filter CE for this assessment because they are an important prey...
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Species selected to represent the “Raptor Concentration Areas” assemblage for the North Slope study area include gyrfalcon (Falco rusticolus), peregrine falcon (Falco peregrinus tundrius), and rough-legged hawk (Buteo lagopus). These three species share similar habitats in arctic Alaska, but differ in seasonal distribution and prey preferences. Primary habitats include cliffs in riparian areas along river drainages and major tributaries, shale banks, mud or sand banks, scree and talus slopes, and steep escarpment faces. This species assemblage was nominated as a Terrestrial Fine-Filter CE because of the role raptors play as top trophic-level predators.
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The majority of the transportation infrastructure is related to oil industry activities. Other community transportation infrastructure – existing and planned – is small in comparison to the oil industry’s activities, as well as small in comparison to other U.S. communities. The transportation network in the region includes airstrips, few paved or gravel roads within communities, and a network of trails to subsistence use areas and those that connect communities. Most communities in the region are located along the northern coast of Alaska, with Nuiqsut, Prudhoe Bay, Atquasuk, and Noatak located along rivers. Travel to and from communities in the region is largely limited to air travel. While many rivers in the region...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - As a final measure of potential human impacts to the ecoregions, the impacts of current anthropogenic development are summarized in a 60 x 60 m grid by the landscape condition model (LCM). The LCM weights the relative influence of different types of human footprints based on factors like permanence, nature of the activity,...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This file includes a downscaled projection of Snow Day Fraction (%) for the decades 2010-2019, 2020-2029, and 2060-2069, and months January, February, March, April, May, September, October, November, and December at 771x771 meter spatial resolution. The file represents a decadal mean calculated from monthly means, using the...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This file includes a downscaled projection of Snow Day Fraction (%) for the decades 2010-2019, 2020-2029, and 2060-2069, and months January, February, March, April, May, September, October, November, and December at 771x771 meter spatial resolution. The file represents a decadal mean calculated from monthly means, using the...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This file includes a downscaled projection of decadal average of spring (March, April, May) total precipitation (in millimeters) for the decades 2010-2019, 2020-2029, and 2060-2069 at 771x771 meter spatial resolution. The file represents a decadal mean of seasonal totals calculated from monthly totals, using the A2 emissions...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This file includes a downscaled projection of decadal average January temperature (in °C) for the decades 2010-2019, 2020-2029, and 2060-2069 at 771x771 meter spatial resolution. The file represents a decadal mean calculated from monthly totals, using the A2 emissions scenario. The spatial extent is clipped to the NOS REA...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This file includes a downscaled projection of Snow Day Fraction (%) for the decades 2010-2019, 2020-2029, and 2060-2069, and months January, February, March, April, May, September, October, November, and December at 771x771 meter spatial resolution. The file represents a decadal mean calculated from monthly means, using the...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - This file includes a downscaled projection of decadal average May temperature (in °C) for the decades 2010-2019, 2020-2029, and 2060-2069 at 771x771 meter spatial resolution. The file represents a decadal mean calculated from monthly totals, using the A2 emissions scenario. The spatial extent is clipped to the NOS REA study...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - The Marine Beach, Barrier Islands, and Spits CE is comprised of barrier islands fronting Alaska’s Arctic Coastal Plain that are elongate, broadly-arcuate features separated from each other by inlets and from the mainland by lagoons, estuaries or bays (Ritter 1986). Both remnant and constructed barrier islands are represented...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - Assessing the impact of oil and gas development on vegetation and hydrology on the North Slope study area involves identifying the accumulation of effects and assessing the relative magnitude of each. Impacts on vegetation include the direct effects associated with the construction of pipelines, roads, gravel pads, and seismic...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - The overall status of sand sheet wetland was assessed by intersecting Landscape Condition with sand sheet wetland distribution for the current condition and two development scenarios, medium and high. The human footprint on the sand sheet accounts for a very small amount of the landscape and is comprised of the community of...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - Assessing the impact of oil and gas development on vegetation and hydrology on the North Slope study area involves identifying the accumulation of effects and assessing the relative magnitude of each. Impacts on vegetation include the direct effects associated with the construction of pipelines, roads, gravel pads, and seismic...
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Some of the NOS rasters intentionally do not align or have the same extent. These rasters were not snapped to a common raster per the authors' discretion. Please review selected rasters prior to use. These varying alignments are a result of the use of differing source data sets and all products derived from them. We recommend that users snap or align rasters as best suits their own projects. - The fine-scale invasion vulnerability model, combining higher probability sites for non-native plant importation and establishment, suggests that the region currently and into the near term is likely to have a non-native plant species restricted to a very small area. By 2060 however, all villages and the human footprint associated...


map background search result map search result map BLM REA NOS 2012 Alaska Freshwater Fish Inventory in North Slope BLM REA NOS 2012 Fish Presence Report in the North Slope BLM REA NOS 2012 Existing Energy Sources in Communities in the North Slope - Oil BLM REA NOS 2012 Riparian Transportation Corridors in the North Slope study area BLM REA NOS 2012 Wild and Scenic Rivers in the North Slope study area BLM REA NOS 2012 BISON Database Occurrences for Willow Ptarmigan BLM REA NOS 2012 General Habitat Occurrences of Willow Ptarmigan BLM REA NOS 2012 Current Raptor Concentration Areas BLM REA NOS 2012 CL CNL SnowDayFraction January Current BLM REA NOS 2012 CL CNL SnowDayFraction May Current BLM REA NOS 2012 CL CNL MarchAprilMayPrecipitation LongTerm BLM REA NOS 2012 CL CNL MeanJanuaryTemperature LongTerm BLM REA NOS 2012 CL CNL MeanMayTemperature LongTerm BLM REA NOS 2012 CL CNL SnowDayFraction April NearTerm BLM REA NOS 2012 High Development Scenario (2040) Landscape Condition BLM REA NOS 2012 Long-Term Future (2060s) Invasion Vulnerability of Floodplains based on the High Development Scenario in the North Slope study area BLM REA NOS 2012 Current Distribution of Marine Beach, Barrier Islands, and Spits BLM REA NOS 2012 Current Oil and Gas Landscape Condition within Distribution of Coastal Plain Wetland BLM REA NOS 2012 Current Development Scenario Landscape Condition within Sand Sheet Wetland Distribution BLM REA NOS 2012 Current Oil and Gas Landscape Condition within Distribution of Sand Sheet Wetland BLM REA NOS 2012 General Habitat Occurrences of Willow Ptarmigan BLM REA NOS 2012 Fish Presence Report in the North Slope BLM REA NOS 2012 Alaska Freshwater Fish Inventory in North Slope BLM REA NOS 2012 Wild and Scenic Rivers in the North Slope study area BLM REA NOS 2012 Current Raptor Concentration Areas BLM REA NOS 2012 Riparian Transportation Corridors in the North Slope study area BLM REA NOS 2012 Existing Energy Sources in Communities in the North Slope - Oil BLM REA NOS 2012 BISON Database Occurrences for Willow Ptarmigan BLM REA NOS 2012 CL CNL SnowDayFraction January Current BLM REA NOS 2012 CL CNL SnowDayFraction May Current BLM REA NOS 2012 CL CNL MarchAprilMayPrecipitation LongTerm BLM REA NOS 2012 CL CNL MeanJanuaryTemperature LongTerm BLM REA NOS 2012 CL CNL MeanMayTemperature LongTerm BLM REA NOS 2012 CL CNL SnowDayFraction April NearTerm BLM REA NOS 2012 High Development Scenario (2040) Landscape Condition BLM REA NOS 2012 Current Oil and Gas Landscape Condition within Distribution of Coastal Plain Wetland BLM REA NOS 2012 Current Development Scenario Landscape Condition within Sand Sheet Wetland Distribution BLM REA NOS 2012 Current Oil and Gas Landscape Condition within Distribution of Sand Sheet Wetland BLM REA NOS 2012 Current Distribution of Marine Beach, Barrier Islands, and Spits BLM REA NOS 2012 Long-Term Future (2060s) Invasion Vulnerability of Floodplains based on the High Development Scenario in the North Slope study area